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CN107203070A - A kind of composite membrane and preparation method thereof, backlight and display device - Google Patents

A kind of composite membrane and preparation method thereof, backlight and display device Download PDF

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Publication number
CN107203070A
CN107203070A CN201710589300.1A CN201710589300A CN107203070A CN 107203070 A CN107203070 A CN 107203070A CN 201710589300 A CN201710589300 A CN 201710589300A CN 107203070 A CN107203070 A CN 107203070A
Authority
CN
China
Prior art keywords
heat
dissipating layer
composite membrane
heat dissipating
membrane body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201710589300.1A
Other languages
Chinese (zh)
Other versions
CN107203070B (en
Inventor
张树柏
孙海威
桑建
马俊杰
王振
李金鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BOE Technology Group Co Ltd
Beijing BOE Optoelectronics Technology Co Ltd
Original Assignee
BOE Technology Group Co Ltd
Beijing BOE Optoelectronics Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BOE Technology Group Co Ltd, Beijing BOE Optoelectronics Technology Co Ltd filed Critical BOE Technology Group Co Ltd
Priority to CN201710589300.1A priority Critical patent/CN107203070B/en
Publication of CN107203070A publication Critical patent/CN107203070A/en
Application granted granted Critical
Publication of CN107203070B publication Critical patent/CN107203070B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133615Edge-illuminating devices, i.e. illuminating from the side
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/30Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00Ancillary operations in connection with laminating processes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00Ancillary operations in connection with laminating processes
    • B32B38/16Drying; Softening; Cleaning
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/30Properties of the layers or laminate having particular thermal properties
    • B32B2307/302Conductive
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/40Properties of the layers or laminate having particular optical properties
    • B32B2307/416Reflective
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00Electrical equipment
    • B32B2457/20Displays, e.g. liquid crystal displays, plasma displays
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133628Illuminating devices with cooling means

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)

Abstract

The invention discloses a kind of composite membrane and preparation method thereof, backlight and display device.Composite membrane, including:Membrane body;With the heat dissipating layer for being arranged on membrane body surface, heat dissipating layer includes concaveconvex structure.The composite membrane that the present invention is provided, heat dissipating layer is arranged on membrane body, and heat dissipating layer includes concaveconvex structure, heat on membrane body is outwards transmitted by concaveconvex structure, concaveconvex structure realizes that thickness direction of the heat along heat dissipating layer quickly sheds, effectively shorten the transmission range of heat on heat dissipating layer, to realize the purpose of lifting membrane body radiating efficiency.

Description

A kind of composite membrane and preparation method thereof, backlight and display device
Technical field
The present invention relates to, but not limited to lcd technology, espespecially a kind of composite membrane, a kind of preparation method of composite membrane, one Plant backlight and a kind of display device.
Background technology
With to screen definition requirement increase, pixel require it is more next many, so as to be accomplished by bigger area to arrange Column drive circuit, now delustring area will increase, the overall light transmittance of module will decline, but in order to ensure module is overall Briliancy can not reduce, researcher's majority improves the brightness of backlights and solves this problem in the industry.Improving brightness of backlight source is most Basic quick way is exactly to improve the brightness of light source led, can be due to close on the mostly guide-lighting excellent but heat conduction in the luminous places of LED Poor polyphosphazene polymer methyl methacrylate (PET) matrix membrane material, as shown in figure 1, the heat sent after being lighted so as to light source The accumulation of amount over time is continuously increased, when heat exceedes glass transition temperature (Tg) point of polymethyl methacrylate, film The risk that gauffer occurs for material can steeply rise, and the common reflectance coating at light source is in 8 font gauffers.Traditional backlight design one As radiating is realized for modes such as graphite flake, the standby graphite flake in the reflectance coating back side half, the complete standby graphite flakes in the reflectance coating back side by lamp bar. But it is due to edge costly, when cutting destructible, the dry linting of graphite flake so that it forms limitation in a large amount of volume productions.
The content of the invention
In order to solve the above-mentioned technical problem, the invention discloses a kind of composite membrane, its manufacture craft is simple, cost of manufacture Low, membrane body rapid heat dissipation, can be preferably applied for a large amount of volume productions.
In order to reach the object of the invention, the invention provides a kind of composite membrane, including:Membrane body;Be arranged on the film The heat dissipating layer of body surface, the heat dissipating layer includes concaveconvex structure.
Alternatively, the heat dissipating layer includes polymeric matrix and Heat Conduction Material.
Alternatively, the Heat Conduction Material is cross-linked to form passage of heat in the concaveconvex structure, and the passage of heat is tilted In the membrane body or perpendicular to plane where the membrane body.
Alternatively, the heat dissipating layer also includes ink.
Alternatively, the polymeric matrix be acrylic resin, the Heat Conduction Material be Sheet Graphite alkene, CNT or Lamella boron oxide.
Present invention also offers a kind of backlight, including glue frame, light source, light guide plate, optical film and any of the above-described implementation Composite membrane described in example, the light source is located at the side of the light guide plate, and the optical film is located at the light extraction of the light guide plate Side, the composite membrane are located at the side relative with light emission side of the light guide plate, and the membrane body of the composite membrane is reflection Film, the heat dissipating layer of the composite membrane is located on the side side of the remote light guide plate of the reflectance coating.
Present invention also offers a kind of display device, include the backlight described in above-described embodiment.
Present invention also offers a kind of preparation method of composite membrane, including:It is used to make scattered in the surface roller coating of membrane body The solution of thermosphere, the solution for making heat dissipating layer includes organic solvent, polymeric matrix and Heat Conduction Material;Baking, makes solution Interior organic solvent volatilizees, Heat Conduction Material precrosslink forms passage of heat;Passage of heat carry out level is taken by laminater To;Quarter shape orientation is carried out to passage of heat by mould and concaveconvex structure is formed so that the orientation of passage of heat is by horizontality It is transformed into vertical state or heeling condition;Curing molding, is made heat dissipating layer on membrane body.
Alternatively, the organic solvent is ethanol, butanone or toluene.
Alternatively, the curing molding uses ultraviolet light solidification, heat cure, radiation curing or microwave curing, the mould Section include concaveconvex structure triangular in shape or rectangle, the back side roller coat of the membrane body is used for the solution for making heat dissipating layer.
Compared with prior art, the composite membrane that the present invention is provided, heat dissipating layer is arranged on membrane body, and heat dissipating layer is including recessed Heat on male structure, membrane body is outwards transmitted by concaveconvex structure, and concaveconvex structure realizes thickness direction of the heat along heat dissipating layer Quickly shed, effectively shorten the transmission range of heat on heat dissipating layer, to realize the purpose of lifting membrane body radiating efficiency.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification Obtain it is clear that or being understood by implementing the present invention.The purpose of the present invention and other advantages can be by specification, rights Specifically noted structure is realized and obtained in claim and accompanying drawing.
Brief description of the drawings
Accompanying drawing is used for providing further understanding technical solution of the present invention, and constitutes a part for specification, with this The embodiment of application is used to explain technical scheme together, does not constitute the limitation to technical solution of the present invention.
Fig. 1 is the sectional structure partial schematic diagram of the backlight described in correlation technique;
Fig. 2 is the sectional structure partial schematic diagram of the backlight described in one embodiment of the invention;
Fig. 3 be Fig. 2 in composite membrane structural representation;
Fig. 4 is the structural representation of the composite membrane described in another embodiment of the present invention;
Fig. 5 is the flow chart of the preparation method of the composite membrane described in one embodiment of the invention.
Reference
100 reflectance coatings, 300 glue frames, 400 light sources, 500 light guide plates, 600 optical films, 1 membrane body, 2 heat dissipating layers, 21 is recessed Male structure, 22 passages of heat, 3 glue frames, 4 light sources, 5 light guide plates, 6 optical films.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, below in conjunction with accompanying drawing to the present invention Embodiment be described in detail.It should be noted that in the case where not conflicting, in the embodiment and embodiment in the application Feature can mutually be combined.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also Implemented with being different from mode described here using other, therefore, protection scope of the present invention is not by following public tool The limitation of body embodiment.
A kind of composite membranes of some embodiments of the invention, a kind of preparation method of composite membrane, one are described below in conjunction with the accompanying drawings Plant backlight and a kind of display device.
The composite membrane that the present invention is provided, as shown in Figure 3 and Figure 4, including:Membrane body 1;Be arranged on the table of membrane body 1 The heat dissipating layer 2 in face, the heat dissipating layer 2 includes concaveconvex structure 21.
The composite membrane that the present invention is provided, heat dissipating layer 2 is arranged on membrane body 1, and heat dissipating layer 2 includes concaveconvex structure 21, film Heat on body 1 is outwards transmitted by concaveconvex structure 21, and concaveconvex structure 21 realizes that thickness direction of the heat along heat dissipating layer 2 is quick Shed, effectively shorten the transmission range of heat on heat dissipating layer 2, to realize the purpose of the lifting radiating efficiency of membrane body 1.
Wherein, the heat dissipating layer 2 includes polymeric matrix and Heat Conduction Material, and polymeric matrix is connected with membrane body 1, led Hot material is located in polymer matrix body and concaveconvex structure 21 is formed on heat dissipating layer 2 by prism microstructure duplication process so that Thickness direction of the Heat Conduction Material along heat dissipating layer 2 is radiated rather than radiated along the length direction or width of heat dissipating layer 2, Effectively shorten the heat dissipation path of heat dissipating layer 2, to cause the heat on membrane body 1 quickly to be shed by heat dissipating layer 2.
Specifically, the Heat Conduction Material is cross-linked to form passage of heat 22, the passage of heat in the concaveconvex structure 21 22 favour the membrane body 1 or perpendicular to the place plane of membrane body 1, one end for closing on membrane body 1 of heat dissipation channel with The surface contact of membrane body 1, the other end of heat dissipation channel is located on the surface of concaveconvex structure 21, and the heat edge on membrane body 1 dissipates The passage of heat is transmitted and quickly shed.
In addition, the heat dissipating layer 2 also includes ink, ink can be blocked to light, stop that light passes through heat dissipating layer 2, The display performance of display device can be lifted when composite membrane is applied to display device.
Specifically, the polymeric matrix is crylic acid resin material, and the Heat Conduction Material is Sheet Graphite alkene, carbon is received The material such as mitron or lamella boron oxide, can be achieved the application purpose, its objective without departing from the present invention design philosophy, herein Repeat no more, all should belong in the protection domain of the application.
Specifically, as shown in figure 3, concaveconvex structure is cross section broached-tooth design triangular in shape;Or it is as shown in figure 4, concavo-convex Structure is the rectangular Great Wall structure in cross section.
The backlight that the present invention is provided, as shown in Fig. 2 including glue frame 3, light source 4, light guide plate 5, optical film 6 and above-mentioned Composite membrane described in any embodiment, the light source 4 is located at the side of the light guide plate 5, and the optical film 6 is located at described lead The light emission side of tabula rasa 5, the composite membrane be located at the light guide plate 5 the side relative with light emission side, the composite membrane it is described Membrane body 1 is reflectance coating, and the heat dissipating layer 2 of the composite membrane is located at the side of the remote light guide plate 5 of the reflectance coating On side.
On the backlight that the present invention is provided, heat transfer to the reflectance coating that light source 4 is produced, then self-reflection film is transferred to radiating Quickly shed on layer 2, along the thickness direction of heat dissipating layer 2, to cause the heat of backlight quickly to scatter and disappear, it is to avoid occur at light source 4 The problem of Folding Deformation etc..
Temperature at light source 4 by 55 degree can drop to 38 degree or so relative to prior art, can phase from light source 410mm regions Drop to 38 degree or so by 50 degree for prior art.And the concaveconvex structure 21 on heat dissipating layer 2 can increase the structure of reflectance coating Intensity, it is to avoid 8 font forming corrugations occur for reflectance coating.And heat dissipating layer 2 need not be cut, its technique is simpler.
The display device (not shown) that the present invention is provided, includes the backlight described in above-described embodiment.
The display device that the present invention is provided, all advantages for possessing the backlight of above-described embodiment offer, no longer goes to live in the household of one's in-laws on getting married herein State, all should belong in the protection domain of the application.
The preparation method for the composite membrane that the present invention is provided, as shown in figure 5, including:
Step 102:The solution for being used to make heat dissipating layer in the surface roller coating of membrane body, the solution bag for making heat dissipating layer Include organic solvent, polymeric matrix and Heat Conduction Material;
Step 104:Toasted using baking oven, the organic solvent in solution is volatilized, Heat Conduction Material precrosslink forms heat conduction and led to Road;
Step 106:Passage of heat is horizontally oriented by laminater;
Step 108:Passage of heat is carried out carving shape orientation by mould and concaveconvex structure is formed so that passage of heat takes It is transformed into vertical state or heeling condition to by horizontality;
Step 110:Curing molding, is made heat dissipating layer on membrane body.
The preparation method for the composite membrane that the present invention is provided, its technique is simple, be easy to volume production, and the heat dissipating layer being made is not required to The technique such as subsequently to cut, its practicality is notable.
Quarter shape orientation is carried out to passage of heat by mould and concaveconvex structure is formed, i.e.,:Work is replicated using prism microstructure Skill, such passage of heat is just transformed into heeling condition or plumbness by horizontality, shortens the propagation path of passage of heat, More conducively quickly transmission sheds heat.
Wherein, the organic solvent is ethanol, butanone or toluene etc., and the curing molding is using ultraviolet light solidification, thermosetting Change, radiation curing or microwave curing etc., the section of the mould include broached-tooth design (referring to Fig. 3) or rectangle triangular in shape Great Wall structure (referring to Fig. 4) etc., the back side roller coat of the membrane body is used for the solution for making heat dissipating layer, and the membrane body is reflection Film.
In summary, the composite membrane that the present invention is provided, heat dissipating layer is arranged on membrane body, and heat dissipating layer includes concavo-convex tie Heat on structure, membrane body is outwards transmitted by concaveconvex structure, and concaveconvex structure realizes that heat is quick along the thickness direction of heat dissipating layer Shed, effectively shorten the transmission range of heat on heat dissipating layer, to realize the purpose of lifting membrane body radiating efficiency.
In the description of the invention, term " installation ", " connected ", " connection ", " fixation " etc. all should be interpreted broadly, example Such as, " connection " can be fixedly connected or be detachably connected, or be integrally connected;Can be joined directly together, can also It is indirectly connected to by intermediary.For the ordinary skill in the art, above-mentioned art can be understood as the case may be The concrete meaning of language in the present invention.
In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc. Mean that combining the embodiment or specific features, structure, material or the feature of example description is contained at least one reality of the invention Apply in example or example.In this manual, identical embodiment or reality are not necessarily referring to the schematic representation of above-mentioned term Example.Moreover, description specific features, structure, material or feature can in any one or more embodiments or example with Suitable mode is combined.
Although disclosed herein embodiment as above, described content be only readily appreciate the present invention and use Embodiment, is not limited to the present invention.Technical staff in any art of the present invention, is taken off not departing from the present invention On the premise of the spirit and scope of dew, any modification and change, but the present invention can be carried out in the form and details of implementation Scope of patent protection, still should be subject to the scope of the claims as defined in the appended claims.

Claims (10)

1. a kind of composite membrane, it is characterised in that including:
Membrane body;With
The heat dissipating layer on the membrane body surface is arranged on, the heat dissipating layer includes concaveconvex structure.
2. composite membrane according to claim 1, it is characterised in that the heat dissipating layer includes polymeric matrix and heat conduction material Material.
3. composite membrane according to claim 2, it is characterised in that the Heat Conduction Material is crosslinked shape in the concaveconvex structure Into passage of heat, the passage of heat favours the membrane body or perpendicular to plane where the membrane body.
4. composite membrane according to claim 2, it is characterised in that the heat dissipating layer also includes ink.
5. composite membrane according to claim 2, it is characterised in that the polymeric matrix is acrylic resin, described to lead Hot material is Sheet Graphite alkene, CNT or lamella boron oxide.
6. a kind of backlight, it is characterised in that including appointing in glue frame, light source, light guide plate, optical film and such as claim 1 to 5 Composite membrane described in one, the light source is located at the side of the light guide plate, and the optical film is located at going out for the light guide plate Light side, the composite membrane are located at the side relative with light emission side of the light guide plate, and the membrane body of the composite membrane is anti- Film is penetrated, the heat dissipating layer of the composite membrane is located on the side side of the remote light guide plate of the reflectance coating.
7. a kind of display device, it is characterised in that include backlight as claimed in claim 6.
8. a kind of preparation method of composite membrane, it is characterised in that including:
The solution for being used to make heat dissipating layer in the surface roller coating of membrane body, the solution for being used to make heat dissipating layer is including organic molten Agent, polymeric matrix and Heat Conduction Material;
Baking, makes the organic solvent in solution volatilize, Heat Conduction Material precrosslink forms passage of heat;
Passage of heat is horizontally oriented by laminater;
Quarter shape orientation is carried out to passage of heat by mould and concaveconvex structure is formed so that the orientation of passage of heat is by horizontality It is transformed into vertical state or heeling condition;
Curing molding, is made heat dissipating layer on membrane body.
9. the preparation method of composite membrane according to claim 8, it is characterised in that the organic solvent is ethanol, butanone Or toluene.
10. the preparation method of composite membrane according to claim 9, it is characterised in that the curing molding uses ultraviolet light Solidification, heat cure, radiation curing or microwave curing, the section of the mould include concaveconvex structure triangular in shape or rectangle, institute State the solution that the back side roller coat of membrane body is used to make heat dissipating layer.
CN201710589300.1A 2017-07-19 2017-07-19 Composite film, manufacturing method thereof, backlight source and display device Expired - Fee Related CN107203070B (en)

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Application Number Priority Date Filing Date Title
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CN107203070A true CN107203070A (en) 2017-09-26
CN107203070B CN107203070B (en) 2021-03-02

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CN109975900A (en) * 2017-12-27 2019-07-05 宁波长阳科技股份有限公司 A kind of reflectance coating and the preparation method and application thereof with heat conducting coating
CN110164323A (en) * 2019-05-23 2019-08-23 武汉华星光电半导体显示技术有限公司 A kind of display screen and electronic device
WO2020107865A1 (en) * 2018-11-30 2020-06-04 武汉华星光电技术有限公司 Backlight module
CN111589675A (en) * 2020-05-18 2020-08-28 横店集团东磁股份有限公司 High-thermal-conductivity electromagnetic wave absorption composite sheet and preparation method thereof
CN114994967A (en) * 2022-05-27 2022-09-02 武汉天马微电子有限公司 Display module and display device

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KR20050074886A (en) * 2004-01-14 2005-07-19 가부시키가이샤 야마모토 플라스틱고교 Backlight unit for liquid crystal display device
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CN109975900A (en) * 2017-12-27 2019-07-05 宁波长阳科技股份有限公司 A kind of reflectance coating and the preparation method and application thereof with heat conducting coating
CN109975900B (en) * 2017-12-27 2021-07-06 宁波长阳科技股份有限公司 Reflecting film with heat-conducting coating and preparation method and application thereof
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WO2020232945A1 (en) * 2019-05-23 2020-11-26 武汉华星光电半导体显示技术有限公司 Display screen and electronic device
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